hotspot/src/share/vm/prims/jvmtiTrace.hpp
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     1 /*
       
     2  * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
       
    20  * CA 95054 USA or visit www.sun.com if you need additional information or
       
    21  * have any questions.
       
    22  *
       
    23  */
       
    24 
       
    25 ///////////////////////////////////////////////////////////////
       
    26 //
       
    27 // class JvmtiTrace
       
    28 //
       
    29 // Support for JVMTI tracing code
       
    30 //
       
    31 
       
    32 // Support tracing except in product build on the client compiler
       
    33 #ifndef PRODUCT
       
    34 #define JVMTI_TRACE 1
       
    35 #else
       
    36 #ifdef COMPILER2
       
    37 #define JVMTI_TRACE 1
       
    38 #endif
       
    39 #endif
       
    40 
       
    41 #ifdef JVMTI_TRACE
       
    42 
       
    43 class JvmtiTrace : AllStatic {
       
    44 
       
    45   static bool        _initialized;
       
    46   static bool        _on;
       
    47   static bool        _trace_event_controller;
       
    48   static jbyte       _trace_flags[];
       
    49   static jbyte       _event_trace_flags[];
       
    50   static const char* _event_names[];
       
    51   static jint        _max_function_index;
       
    52   static jint        _max_event_index;
       
    53   static short       _exclude_functions[];
       
    54   static const char* _function_names[];
       
    55 
       
    56 public:
       
    57 
       
    58   enum {
       
    59     SHOW_IN =              01,
       
    60     SHOW_OUT =             02,
       
    61     SHOW_ERROR =           04,
       
    62     SHOW_IN_DETAIL =      010,
       
    63     SHOW_OUT_DETAIL =     020,
       
    64     SHOW_EVENT_TRIGGER =  040,
       
    65     SHOW_EVENT_SENT =    0100
       
    66   };
       
    67 
       
    68   static bool tracing()                     { return _on; }
       
    69   static bool trace_event_controller()      { return _trace_event_controller; }
       
    70   static jbyte trace_flags(int num)         { return _trace_flags[num]; }
       
    71   static jbyte event_trace_flags(int num)   { return _event_trace_flags[num]; }
       
    72   static const char* function_name(int num) { return _function_names[num]; } // To Do: add range checking
       
    73 
       
    74   static const char* event_name(int num) {
       
    75     static char* ext_event_name = (char*)"(extension event)";
       
    76     if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) {
       
    77       return _event_names[num];
       
    78     } else {
       
    79       return ext_event_name;
       
    80     }
       
    81   }
       
    82 
       
    83   static const char* enum_name(const char** names, const jint* values, jint value);
       
    84 
       
    85   static void initialize();
       
    86   static void shutdown();
       
    87 
       
    88   // return a valid string no matter what state the thread is in
       
    89   static const char *safe_get_thread_name(Thread *thread);
       
    90 
       
    91   // return the name of the current thread
       
    92   static const char *safe_get_current_thread_name();
       
    93 
       
    94   // return a valid string no matter what the state of k_mirror
       
    95   static const char *get_class_name(oop k_mirror);
       
    96 };
       
    97 
       
    98 #endif /*JVMTI_TRACE */